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How to Read Long-Range Weather Forecasts

Long-range predictions show weather trends in temperatures and precipitation. For example, will the winter be colder or warmer than average? Will there be more or less snow than what's typical for your area? Our famous predictions (traditionally 80% accurate) are made 18 months in advance, and meant to help you make more informed decisions for long-term planning.

Annual Weather Summary: November 2016 to October 2017

Winter will be warmer than normal, with above-normal precipitation. The coldest periods will be in late December and early to mid-January and from mid-January into early February. Snowfall will be above normal in New York and Illinois and below normal elsewhere, with the snowiest periods in mid-November, late December, early and late January, mid-February, and early March.

April and May will be warmer and slightly drier than normal.

Summer will be slightly cooler and rainier than normal. The hottest period will be in mid-July, with other hot periods in early July and mid- to late August.